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Why 0 is true but false is 1 in the shell?
The above will output 1 , which is contradictory with all other programming languages I know.
10 Answers
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In Ruby, is there an Array method that combines 'select' and 'map'?
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I usually use map and compact together along with my selection criteria as a postfix if. compact gets rid of the nils.
jruby-1.5.0 > [1,1,1,2,3,4].map{|n| n*3 if n==1}
=> [3, 3, 3, nil, nil, nil]
jruby-1.5.0 > [1,1,1,2,3,4].map{|n| n*3 if n==1}.compact
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In .NET, which loop runs faster, 'for' or 'foreach'?
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Patrick Smacchia blogged about this last month, with the following conclusions:
for loops on List are a bit more than 2 times cheaper than foreach
loops on List.
Looping on array is around 2 times cheaper than looping on List.
As a consequence, looping on array...
Identity increment is jumping in SQL Server database
... of my tables Fee in column "ReceiptNo" in SQL Server 2012 database identity increment suddenly started jumping to 100s instead of 1 depending on the following two things.
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Java HTTPS client certificate authentication
I'm fairly new to HTTPS/SSL/TLS and I'm a bit confused over what exactly the clients are supposed to present when authenticating with certificates.
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CSS /JS to prevent dragging of ghost image?
...eeing a ghost of the image they are trying to drag (not concern about security of the images, but the experience).
17 Answe...
What resources are shared between threads?
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edited Mar 28 '19 at 9:44
Hearen
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converting CSV/XLS to JSON? [closed]
...This worked perfectly for me and does NOT require a file upload:
https://github.com/cparker15/csv-to-json?files=1
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Java's L number (long) specification
It appears that when you type in a number in Java, the compiler automatically reads it as an integer, which is why when you type in (long) 6000000000 (not in integer's range) it will complain that 6000000000 is not an integer. To correct this, I had to specify 6000000000L . I just learned abo...
how to stop Javascript forEach? [duplicate]
I'm playing with Node.js and Mongoose — trying to find specific comment in deep comments nesting with recursive function and forEach within. Is there a way to stop Node.js forEach ? As I understand every forEach iteration is a function and and I can't just do break , only return but this w...